Engine Size: 4.7l
Refrigerant Type: 134a
I'm trying to decide whether or not to replace my condenser when I replace the compressor/drier/oriface.
02 Dakota, 4.7l v8, ~180,000 miles, driven about 2,000 miles a year.
The compressor knocks when its engaged, and I think its days are numbered. I don't want to wait for it to lock up and throw the serpentine belt.
The refrigerant leaks out through the winter, I think the compressor is to blame for this.
When charged with freon, it does work, but the cooling isn't particularly impressive.
What I'm planning on doing:
The freon is currently leaked out. Before charging it, I want to try to fix it. I'm looking at a compressor kit from rock auto (compressor, orifice, drier, seals). I have gauges, vacuum pump, scales, etc.
What I'm not so sure about:
I'm trying to decide whether or not to replace the condenser also. If the compressor had actually failed (and metal fragments were a concern), I would definitely get a condenser also. So I pulled the orifice tube to have a look. Its has some debris on it, blackish, looks kinda like lint. The tube was clean, and when blowing the orifice out of the tube I blew clean red oil spray out. Its red from the dye I used to try to find the leak.
Here's a few photos of the orifice tube:
The condenser I'm looking at is DENSO Part # 4770869, which will add about $70 to my rock auto order.
I've done AC work in the past, but haven't looked at orifice tubes before. So I don't know if this is normal, or bad.
From the pics, I say the black residue is baked oil (overheated). With a leaker, most of the systems used oil will have accumulated in the Evap, as oil migration slows and stops. I would recommend flushing the Evap and condenser, or replacing both. Have you looked at those same parts from this site's sponsor?
ok, thanks. I ordered the condenser, but not the evaporator. I'll flush the evaporator.
re: site's sponsor - they were quite a bit higher.
Thank you sir!
Compressor $10.00 dollars more.
Drier $2.00 more.
Orifice Tube $.50 more.
Still think we are fairly priced overall.
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